Earth X Trilogy Companion (2008)

The Earth X Trilogy revealed secrets of the Marvel Universe, but what are the secrets of the Earth X Trilogy? See for yourself in this collection of sketches, background material and incredible insights - all handpicked by series co-creator Alex Ross, and many seen here for the first time! Plus: the rare EARTH X #1/2; and the never-before-printed X-51 EARTH X prequel, originally serialized as an online comic.